Home / 51,421.20-77,143.35-18,141.54

Finding the Fourth Proportional to 51,421.20, 77,143.35 and 18,141.54

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Solution

The fourth proportional to 51,421.20, 77,143.35 and 18,141.54 is: 27,216.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,421.20 : 77,143.35 = 18,141.54 : x
  2. Step 2: Convert to fraction form
    51,421.20/77,143.35 = 18,141.54/x
  3. Step 3: Cross multiply
    51,421.20x = 77,143.35 × 18,141.54
  4. Step 4: Simplify right side
    51,421.20x = 1,399,498,948.50
  5. Step 5: Solve for x
    x = 1,399,498,948.50/51,421.20
  6. Step 6: Final answer
    x = 27,216.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.